While rubber itself has been used for thousands of years, it tends to crack easily in the cold, and melt easily in the heat, so was not widely used as wheel tires until vulcanized rubber was invented during the 19th century.「Wheels spurting」indicates two concepts: (1) wheels without rubber tires were hard and narrow, and therefore caused deep RUTS when riding over roads on a rainy day, and (2) vehicles would cause large「wheel spurting」as they FOLLOWED THE BEATEN TRACK, even when it was not raining, since the deep ruts were still often filled with muddy water. FAMILIAR PATH, the BEATEN TRACK, the PROPER COURSE, RAILROAD and ORBIT also indicate that it was extremely difficult NOT to travel in the deep ruts, since turning out of them would normally break one or both wheels.
　「Hand」inside「making friends」and「rotation spurting」could also be the sages sarcastic FAMILIAR BEATEN PATH, since a vehicle could not easily deviate from the ruts, a yak would simply need to keep walking to follow the path, leaving the driver free to snooze, or jerk off (see 交 and 䡄). The meaning of PROPER COURSE in this case suggests that lending a hand to a friend, or for use on oneself, may be better than the caverns of prostitutes or tupping ewes while dodging syphilitic spirochetes.
　「Rotating wheels spurting」with large reciprocating external pistons supports the RAILROAD STEAM LOCOMOTIVE meaning as well. Additionally perhaps referring to the「track, trail, tail」formed by「vehicle wheels」with the right element used for the shape of the numeral「nine」but not as a glyph, rather, as formed by the Chinese hand gesture for「nine」which is curling one's fingers into a round shape (the「wheel」) in the palm, and to form a hook with one's index finger (the「track, trail」of the wheel) with the palm facing downward, not unlike the Arabic numeral for nine「9」that is now common throughout the world. The wheel is forming a track that follows (the「tail」of the nine, a curved index finger) in the dirt as the wheel revolves, creating ROAD RUTS, a FAMILIAR PATH, BEATEN TRACK, the PROPER COURSE, later extended to RAILROAD TRACKS and ORBITS, a cycle of repeated motions.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: course; path; track; rail
Unihan extended: track, rut, path
EDRDG: rut; wheel; track; model; way of doing